Question

How many moles of iron atoms are in 5.5 mol of
Fe_{2}O_{3}?

Answer #1

To solve this you must know two things:

1.) What is the molar mass of Fe2O3.

2.) What fraction of that mass is contributed by Iron atoms.

1. Molar mass of Fe2O3 = (2 * 55.85g/mol) + (3 * 16.00g/mol) = 159.70 g/mol

2. Can be found by dividing the amount of mass contributed by
iron atoms by total mass of the compound:

[ (2 * 55.85g/mol) / (159.70g/mol) ] * 100 = 0.69944

69.944% of the mass of each Fe2O3 formula unit is contributed by
iron.

Now the no. of moles of Fe is given by, 5.5mol*0.6994 = 3.846 mol

**The no. of moles of Fe in 5.5 mol of Fe2O3 =
3.846**

How many moles of O atoms are contained in 2.10 mol of iron(III)
sulfate, Fe2(SO4)3?

How many moles of sulfur trioxide are formed from 5 moles of
sulfur dioxide using the given balanced equation?
2
SO2 + O2 → 2 SO3
A.
2 mol of SO3
B.
12 mol of SO3
C.
10 mol of SO3
D.
4 mol of SO3
E.
6 mol of SO3
How many iron atoms are in 0.32 mol of
Fe2O3? (I have seen people putting A or D so
I'm not sure)
A.
3.9 × 1023 iron atoms
B....

A) How many moles of oxygen atoms are in 4.48 moles of magnesium
phosphate: Mg3(PO4)2 (Mw. 262.87
g/mol)?
B) How many moles of hydroxide ion are in 4.58 moles of aluminum
hydroxide: Al(OH)3 (Mw. 78.00 g/mol)?
C) How many iron ions are in 4.5 moles of iron (III) carbonate:
Fe2(CO3)3 (Mw. 291.73 g/mol)?

aluminium metal reacts with iron3 oxide to produce aluminium
oxide and iron metal
how many moles of fe2o3 are required to completely react with
44g al?
how many moles of fe are produced by the reaction of 3.14 mol
fe2o3 and 99.1g al?

How many moles of oxygen, O, are there in 479.07 g of iron (III)
oxide, Fe2O3? Molar mass of
Fe2O3 is 159.69 g/mol.
9.00 MOL
3.00 MOL
1.00 MOL
0.333 MOL
From the Balanced Chemical Equation: 4 Al + 3O2
--> 2 Al2O3
Apply Stoichiometry to determine the yield (grams) of
Al2O3 produced if you start with 108 grams of
Al in excess O2 as reactants. Aluminum is the limiting reactant,
and oxygen is present in excess. The formula weight...

How many moles of carbon atoms are there in 4 mol of each of the
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Calcium carbonate, CaCO3. Express your answer numerically in
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Iron(III) oxide reacts with carbon to give iron and carbon
monoxide.
Fe2O3(s)+3C(s)→2Fe(s)+3CO(g)
Part A: How many grams of C are required to react with 19.9 g of
Fe2O3?
Part B: How many grams of CO are produced when 37.0 g of C
reacts?
Part C: How many grams of Fe can be produced when 5.60 g of
Fe2O3 reacts?
2. How many moles of S are in each of the following
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Part A: 21 g of S (Express your...

Combining 0.343 mol of Fe2O3 with excess carbon produced 16.8g
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